In eukaryotes, ribosomes become associated with endoplasmic reticulum membranes when a signal sequence from the RNA is given. <span>In the cytoplasm, ribsomal RNA (rRNA), a type of RNA, and protein
combine to form a nucleoprotein called a ribosome. The ribosome serves as
the site and carries the enzymes necessary for protein synthesis. They are
often takes the shape of small round particles attached in the endoplasmic
reticulum. The ribosome attaches itself to m-RNA and provides the stabilizing
structure to hold all substances in position as the protein is synthesized. An example of a eukaryote is the protists. </span>Protists belong to the group eukaryotes (having their DNA enclosed
inside the nucleus). They are not plants, animals or fungi but they act like
one. They can be in general subgroups such as unicellular algae, protozoa and
molds. They thrive in environments with little sunlight.
Answer:
Negative feedback.
Explanation:
It is negative feedback because the reactions triggered by low glucose levels are trying to rebalance the glucose concentrations in our body to make it work properly.
In positive feedback, a product will only stimulate more the components that lead to that product to produce more of it, increasing the product's effect and an imbalance.
Caffeine and the other xanthines block the brain's receptors for a substance known as Adenosine , which is a neurotransmitter or neuromodulator.
The most popular central nervous system stimulant is caffeine. There are three main ways that caffeine affects the central nervous system that have been identified. Only at high non-physiological caffeine concentrations do intracellular calcium mobilisation and specific phosphodiesterase inhibition take place. The antagonism at the level of adenosine receptors is the only likely mechanism of action of the methylxanthine. Caffeine causes a relative brain hypoperfusion by increasing energy metabolism throughout the brain while simultaneously decreasing cerebral blood flow. Caffeine appears to affect the local release of dopamine by activating noradrenaline neurons. Many of caffeine's arousing effects could be attributed to the methylxanthine's effects on serotonin neurons.
To learn more click on the link below
brainly.com/question/4199993
#SPJ4
Answer:
ABG - Arterial blood gas findings
Explanation:
The ABG test measures the pH and the oxugen and CO2 levels in the blood that goes through the arteries.
The blood cells and blood vessels belong to the cardiovascular system.
<h3>What is the Cardiovascular system?</h3>
The cardiovascular system, also known as your circulatory system, is made up of numerous blood veins throughout your body. Your heart uses the extensive, complex network of blood arteries to carry oxygen and other essentials to every part of your body. Additionally, this network takes away items that your body doesn't require and transports them to organs that can dispose of waste. Your entire body receives oxygen, nutrients, and waste through your blood.
The cardiovascular system's job is to make sure that your body gets the nutrition, oxygen, and other things it needs while eliminating the items it doesn't.
Even when you are asleep, your heart is still pumping blood throughout your body. This explains how your doctor can hear your heartbeat. Your heart is making that sound as it works. Every day, your heart pumps around 2,000 liters of blood.
To learn more about cardiovascular system from the link given below:
brainly.com/question/946975
#SPJ4